• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Driver Door Switch B+ | U0199 00 | U0199 00 | -- | -- |
LR Window Switch B+ | 1, 3 | 3 | -- | -- |
Passenger Door Switch B+ | U0200 00 | U0200 00 | -- | -- |
RR Window Switch B+ | 2, 4 | 4 | -- | -- |
Power Window Switch Right Rear Down Signal | B3823 00 | B3823 00 | B3823 00 | -- |
Power Window Switch Right Rear Up Signal | B3822 00 | B3822 00 | B3822 00 | -- |
Power Window Switch Left Rear Down Signal | B3820 00 | B3820 00 | B3820 00 | -- |
Power Window Switch Left Rear Up Signal | B3819 00 | B3819 00 | B3819 00 | -- |
Power Window Lockout Left Rear Control | B3821 00 | B3821 00 | B3821 00 | -- |
Power Window Lockout Right Rear Control | B3824 00 | B3824 00 | B3824 00 | -- |
LR Window Motor Control | 3 | 3 | 3 | -- |
Passenger Window Motor Control | B3205 00 | B3205 0B | B3205 00 | -- |
RR Window Motor Control | 4 | 4 | 4 | -- |
Driver Window Motor Control | B3205 00 | B3205 0B | B3205 00 | -- |
LR Window Switch Ground | -- | 3 | 3 | -- |
RR Window Switch Ground | -- | 4 | 4 | -- |
Driver Door Switch Ground | -- | U0199 00 | 1 | -- |
Passenger Door Switch Ground | -- | U0200 00 | 2 | -- |
1. Driver Window Malfunction 2. Passenger Window Malfunction 3. Left Rear Window Malfunction 4. Right Rear Window Malfunction |
The body control module (BCM) monitors the window lockout command from the driver door switch (DDS). When the rear window switch operation is authorized, the the BCM signal voltage drops approximately 5 volts to the rear window switches allowing for normal window operation from the rear switches. If the rear window lockout function is commanded, the BCM signal voltage is at B+ voltage which disables the rear window switches and the rear windows will only operate when the BCM receives a command from the driver master control.
• | Battery voltage is between 9-16 volts. |
• | The ignition is ON. |
The BCM detects a fault in the left rear window lockout circuit.
The BCM detects a fault in the right rear window lockout circuit.
The left or right rear power window will be inoperative.
• | The DTC will be current for as long as the fault is present. |
• | When the fault is no longer present, the DTC will be a history DTC. |
• | A history DTC will clear after 50 ignition cycles |
Power Windows Description and Operation
Control Module References for scan tool information
Ignition ON, command the rear windows UP and DOWN by using the window switches on the driver master control and their respective rear window switches. The rear windows should perform the UP and DOWN function from each switch.
⇒ | If less than the specified range, test the control circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the BCM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for BCM replacement, setup and programming |